>>> import foo,Numeric
>>> print foo.exp1.__doc__
exp1 - Function signature:
  l,u = exp1([n])
Optional arguments:
  n := 1 input int
Return objects:
  l : rank-1 array('d') with bounds (2)
  u : rank-1 array('d') with bounds (2)

>>> l,u = foo.exp1()
>>> print l,u
[ 1264.   465.] [ 1457.   536.]
>>> print l[0]/l[1], u[0]/u[1]-l[0]/l[1]
2.71827956989 2.25856657199e-06
>>> l,u = foo.exp1(2)
>>> print l,u
[ 517656.  190435.] [ 566827.  208524.]
>>> print l[0]/l[1], u[0]/u[1]-l[0]/l[1]
2.71828182845 1.36437527942e-11